Can it connect to non internet devices under Boot Camp?

My specific question is: I have a Motorola RFID reader that I connect to a Windows machine to do race timing. It only connects with an ethernet cable. I've read that the USB to Ethernet ONLY connects to the internet and does not communicate exactly like an ethernet port used to.
Will this thunderbolt to Ethernet device be able to connect to hardware that uses this connection, and will it be able to do so in bootcamp running windows 7?